A Case of Adenocarcinoid Tumor of the Duodenum Presenting as Duodenal Obstruction

Yoshinari Mochizuki, Eisuke Takeshima, Yutaka Mizuno, Masahiko Imazawa, Taiji Yamazaki, Kazushige Oda, Yoshihisa Kawase, Tetsuya Yamaoka, Motokazu Takeuchi and Isao Kosugi^*

Department of Surgery and Pathology^*, Gamagori City Hospital

A 73-year-old woman with abdominal discomfort was found to have a duodenal obstruction, suspected to be due to strongly pancreatitis. Conservative initial therapy was not successful, necessitating exploratory laparotomy. A frozen section of the specimen at the stenotic site was diagnosed as adenocarcinoma and a pylorus-preserving pancreatoduodenectomy was done. Histological findings for the resected specimen showed features of both carcinoid and adenocarcinoma, leading to a diagnosis of adenocarcinoid. Appendiceal adnocarcinoid tumors were common, but a adenocarcinoid tumor arising from the duodenum is very rare. The prognosis of duodenal adenocarcinoid may be postulated to be intermediate between carcinoid and adenocarcinoma, indicating the need for the long-term patient follow-up.

Key words
adenocarcinoid, duodenal obstruction

Reprint requests
Yoshinari Mochizuki Second Department of Surgery, Nagoya University School of Medicine
65 Tsurumai-cho, Showa-ku, Nagoya, 466-8560 JAPAN

Accepted
February 27, 2002

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